http://www.torah.org/learning/yomtov/calendar/5770.html

Year 5770 / 2009-2010
Yom Tov/Holiday	Hebrew Date	English Date
Rosh Hashana (2 days) Melacha* is prohibited	Tishrei 1-2, 5770	September 19-20, 2009
Fast of Gedalia Melacha* is permitted	Tishrei 3, 5770	September 21, 2009
Yom Kippur Melacha* is prohibited	Tishrei 10, 5770	September 28, 2009
Succos (6 days) Melacha* is prohibited on the first 2 days	Tishrei 15-20, 5770	October 3-8, 2009
Hoshana Rabba Melacha* is permitted	Tishrei 21, 5770	October 9, 2009
Shemini Atzeres Melacha* is prohibited	Tishrei 22, 5770	October 10, 2009
Simchas Torah Melacha* is prohibited	Tishrei 23, 5770	October 11, 2009
Chanuka (8 days) Melacha* is permitted	Kislev 25 - Teves 3, 5770	December 12-19, 2009
Fast of 10th of Teves Melacha* is permitted	Teves 10, 5770	December 27, 2009
Tu B'Shvat Melacha* is permitted	Shvat 15, 5770	January 30, 2010
Fast of Esther Melacha* is permitted	Adar 11, 5770	February 25, 2010
Purim Melacha* is permitted	Adar 14, 5770	February 28, 2010
Passover (8 days) Melacha* is prohibited on first and last 2 days	Nissan 15-22, 5770	March 30 - April 6, 2010
Holocaust Day Melacha* is permitted	Nissan 28, 5770	April 12, 2010
Israel Independence Day Melacha* is permitted	Iyar 5, 5770	April 19, 2010
Lag B'Omer Melacha* is permitted	Iyar 18, 5770	May 2, 2010
Yom Yerushalayim Melacha* is permitted	Iyar 28, 5770	May 12, 2010
Shavuos (2 days) Melacha* is prohibited	Sivan 6-7, 5770	May 19-20, 2010
Fast of 17th of Tamuz Melacha* is permitted	Tamuz 17, 5770	June 29, 2010
Fast of Tisha B'Av Melacha* is permitted	Av 9, 5770	July 20 2010

* Melacha - (lit: constructive work) activities prohibited by Torah Law on the Sabbath and Holidays.